When will it snow in Zhejiang in 2020?

165438+1On the evening of October 28th, it snowed in Lin 'an, Chun 'an, Anji and Huzhou in Zhejiang. 165438+1around 8: 20 pm on October 28th; It snowed in Qingliangfeng National Nature Reserve in Lin 'an, Hangzhou, Zhejiang;

As a natural phenomenon, snow is a process in which water vapor in the air condenses and then falls to the ground again. Water is the foundation of all kinds of life on the earth, and its changes and movements have created our world today.

On the earth, water is constantly circulating. The water in the ocean and on the ground is heated and evaporated into the sky. The water vapor moves to other places with the wind. When they encounter cold air, they form precipitation and return to the earth's surface. There are two kinds of precipitation: one is liquid precipitation, which is rain; The other is solid precipitation, which is snow or hail.

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In addition to atmospheric solid precipitation, another kind of "ground growth type" solid precipitation often appears on the ground, which is frost, rime and rime.

Although these solid precipitation are not atmospheric solid precipitation, they are only formed by condensation, crystallization and freezing of surface water vapor. But these solid precipitation also have a great impact on human production activities. Everyone is familiar with frost, which often reduces agricultural production. In order to avoid freezing injury, people have worked hard. Rime and rime are not very friendly to human beings, and generally appear in high mountains. In supercooled weather, when tiny raindrops or fog drops hit the surface of a severely cooled object, rime and rime will be formed on it.

The intensity and scale of this solid precipitation are sometimes amazing. Often in a day or two, an ice shell more than one meter thick can gather on the windward side of the object, and the scenery is very magical, just like the artistic conception in fairy tales.